Results 51 to 60 of about 916,905 (189)

Frequency Scanning-Based Simplified Overvoltage Prediction Method for SiC Inverter-Fed Motor Drives in Electric Vehicles

open access: yesWorld Electric Vehicle Journal
Wide-bandgap power devices, particularly silicon carbide (SiC) MOSFETs, have seen widespread adoption in electric vehicle (EV) motor drive systems due to their superior switching characteristics, including high switching speeds and high switching ...
Yipu Xu   +4 more
doaj   +1 more source

ESTIMATION OF THE EFFECT OF VARIOUS METHODS AND DEVICES OF IMPULSE OVERVOLTAGE PROTECTION IN THE OIL FIELD ELECTRIC NETWORK 6–10 kV

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2019
Relevance. One of the main causes of high accident rate and outages in distributed power supply systems of 6–10 kV oil fields are overvoltages due to lightning effects.
Sergey V. Sidorov   +2 more
doaj   +1 more source

Towards Power Import and Regional Grid Interconnection: A Singapore‐Centric Energy Internet

open access: yesEnergy Internet, Volume 3, Issue 2, Page 86-91, July 2026.
ABSTRACT Singapore is accelerating its energy transition by pursuing large‐scale cross‐border renewable power import and regional grid interconnection. Targeting up to 6 GW of low‐carbon power import by 2035—equivalent to nearly half of its projected electricity demand—Singapore is poised to transform from a gas‐dominated urban power system into a ...
Yan Xu
wiley   +1 more source

Review of Catenary Icing on High‐Speed Railways: Characteristics, Impact and Countermeasures

open access: yesHigh Voltage, Volume 11, Issue 3, Page 601-619, June 2026.
ABSTRACT The pantograph–catenary system (PCS) is the only path for electrified railway trains to acquire energy. Catenary icing during winter is a common natural phenomenon, which usually leads to the deterioration of the current quality and severely affects the operational safety of trains.
Zheng Li   +7 more
wiley   +1 more source

Influence of Surface Area Calculation Methods on the Interpretation of Lithium‐Ion Diffusion Coefficient in Graphite Electrodes

open access: yesChemElectroChem, Volume 13, Issue 7, 1 April 2026.
Accurate determination of the lithium‐ion diffusion coefficient requires a consistent definition of active surface area. Applying galvanostatic intermittent titration technique and intermittent current interruption to a commercial graphite electrode, we quantify how three common approximations—geometrical area (AGA), scanning electron microscopy ...
Alessandro Gregucci   +2 more
wiley   +1 more source

Research on Uninterrupted Power Supply Technology for Separate Winding Powered Converter

open access: yesKongzhi Yu Xinxi Jishu, 2020
If the auxiliary converter and train power supply system of electric locomotive and EMU use separate windings for power supply, there is a problem of power interruption during pantograph passing neutral sections.
HU Jingyu   +4 more
doaj  

Analysis of light and no‐load operation of a 300 kW resonant single active bridge based on 3.3 kV SiC‐devices

open access: yesIET Power Electronics, 2022
The resonant single active bridge topology (R‐SAB) operated in the half‐cycle discontinuous current mode (HC‐DCM) is a very attractive solution due to its high efficiency, low complexity and fixed voltage transfer ratio (DCX).
G. Fortes   +3 more
doaj   +1 more source

Recent advances in boosting interfacial bubble dynamics with external fields

open access: yesDroplet, Volume 5, Issue 2, April 2026.
External physical fields, including acoustic, magnetic, thermal, mechanical, and optical stimuli, accelerate the entire bubble‐dynamics sequence of nucleation, growth, and detachment. Abstract The efficiency of industrial electrocatalytic reactions depends not only on generating gaseous products but also on their detachment from the catalyst surface ...
Wenlu Xie   +5 more
wiley   +1 more source

Operando Ellipsometric Monitoring of Solid Electrolyte Interphase Evolution on Copper: Effects of Electrolyte Chemistry on Interphase Growth Kinetics

open access: yesSmall Structures, Volume 7, Issue 4, April 2026.
Operando ellipsometry enables the real‐time quantification of SEI thickness growth, linking growth modes to electrochemical features. A localized high‐concentration electrolyte exhibits rapid, self‐limiting interphase growth at the FSI‐ reduction potential (1.5 V vs.
Dominik Weintz   +7 more
wiley   +1 more source

Optimisation Method for Pre-set Arc Suppression Coil Damping Resistors Enhancing Ground Fault Detection [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban
As a key component of pre-set arc suppression coil, the damping resistor is currently configured primarily to suppress series resonance overvoltage and prevent protection maloperation during normal operation.
ZHANG Jianbin   +4 more
doaj   +1 more source

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